NTSTATUS
NtfsFCBInitializeCache(PNTFS_VCB Vcb,
PNTFS_FCB Fcb)
{
PFILE_OBJECT FileObject;
NTSTATUS Status;
PNTFS_CCB newCCB;
FileObject = IoCreateStreamFileObject(NULL, Vcb->StorageDevice);
newCCB = ExAllocatePoolWithTag(NonPagedPool, sizeof(NTFS_CCB), TAG_CCB);
if (newCCB == NULL)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(newCCB, sizeof(NTFS_CCB));
newCCB->Identifier.Type = NTFS_TYPE_CCB;
newCCB->Identifier.Size = sizeof(NTFS_TYPE_CCB);
FileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
FileObject->FsContext = Fcb;
FileObject->FsContext2 = newCCB;
newCCB->PtrFileObject = FileObject;
Fcb->FileObject = FileObject;
Fcb->Vcb = Vcb;
Status = STATUS_SUCCESS;
_SEH2_TRY
{
CcInitializeCacheMap(FileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
FALSE,
&(NtfsGlobalData->CacheMgrCallbacks),
Fcb);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
FileObject->FsContext2 = NULL;
ExFreePoolWithTag(newCCB, TAG_CCB);
ObDereferenceObject(FileObject);
Fcb->FileObject = NULL;
return _SEH2_GetExceptionCode();
}
_SEH2_END;
ObDereferenceObject(FileObject);
Fcb->Flags |= FCB_CACHE_INITIALIZED;
return Status;
}
NTSTATUS
CdfsFCBInitializeCache(PVCB Vcb,
PFCB Fcb)
{
PFILE_OBJECT FileObject;
PCCB newCCB;
FileObject = IoCreateStreamFileObject(NULL, Vcb->StorageDevice);
newCCB = ExAllocatePoolWithTag(NonPagedPool, sizeof(CCB), TAG_CCB);
if (newCCB == NULL)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(newCCB,
sizeof(CCB));
FileObject->ReadAccess = TRUE;
FileObject->WriteAccess = FALSE;
FileObject->DeleteAccess = FALSE;
FileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
FileObject->FsContext = Fcb;
FileObject->FsContext2 = newCCB;
newCCB->PtrFileObject = FileObject;
Fcb->FileObject = FileObject;
Fcb->DevExt = Vcb;
CcInitializeCacheMap(FileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
FALSE,
&(CdfsGlobalData->CacheMgrCallbacks),
Fcb);
ObDereferenceObject(FileObject);
Fcb->Flags |= FCB_CACHE_INITIALIZED;
return STATUS_SUCCESS;
}
/*************************************************************************
*
* Function: Ext2MountVolume()
*
* Description:
* This routine verifies and mounts the volume;
* Called by FSCTRL IRP handler to attempt a
* volume mount.
*
* Expected Interrupt Level (for execution) :
*
* IRQL_PASSIVE_LEVEL
*
*
* Arguments:
*
* Irp - Supplies the Irp being processed
* IrpSp - Irp Stack Location pointer
*
* Return Value:
*
* NTSTATUS - The Mount status
*
*************************************************************************/
NTSTATUS
Ext2MountVolume (
IN PIRP Irp,
IN PIO_STACK_LOCATION IrpSp )
{
// Volume Parameter Block
PVPB PtrVPB;
// The target device object
PDEVICE_OBJECT TargetDeviceObject = NULL;
// The new volume device object (to be created if partition is Ext2)
PDEVICE_OBJECT PtrVolumeDeviceObject = NULL;
// Return Status
NTSTATUS Status = STATUS_UNRECOGNIZED_VOLUME;
// Number of bytes to read for Volume verification...
unsigned long NumberOfBytesToRead = 0;
// Starting Offset for 'read'
LONGLONG StartingOffset = 0;
// Boot Sector information...
PPACKED_BOOT_SECTOR BootSector = NULL;
// Ext2 Super Block information...
PEXT2_SUPER_BLOCK SuperBlock = NULL;
// Volume Control Block
PtrExt2VCB PtrVCB = NULL;
// The File Object for the root directory
PFILE_OBJECT PtrRootFileObject = NULL;
// Flag
int WeClearedVerifyRequiredBit;
// Used by a for loop...
unsigned int i;
//
LARGE_INTEGER VolumeByteOffset;
unsigned long LogicalBlockSize = 0;
// Buffer Control Block
PBCB PtrBCB = NULL;
// Cache Buffer - used for pinned access of volume...
PVOID PtrCacheBuffer = NULL;
PEXT2_GROUP_DESCRIPTOR PtrGroupDescriptor = NULL;
// Inititalising variables
PtrVPB = IrpSp->Parameters.MountVolume.Vpb;
TargetDeviceObject = IrpSp->Parameters.MountVolume.DeviceObject;
try
{
//
// 1. Reading in Volume meta data
//
// Temporarily clear the DO_VERIFY_VOLUME Flag
WeClearedVerifyRequiredBit = 0;
if ( Ext2IsFlagOn( PtrVPB->RealDevice->Flags, DO_VERIFY_VOLUME ) )
{
Ext2ClearFlag( PtrVPB->RealDevice->Flags, DO_VERIFY_VOLUME );
WeClearedVerifyRequiredBit = 1;
}
// Allocating memory for reading in Boot Sector...
NumberOfBytesToRead = Ext2Align( sizeof( EXT2_SUPER_BLOCK ), TargetDeviceObject->SectorSize );
BootSector = Ext2AllocatePool( PagedPool, NumberOfBytesToRead );
RtlZeroMemory( BootSector, NumberOfBytesToRead );
// Reading in Boot Sector
StartingOffset = 0L;
Ext2PerformVerifyDiskRead ( TargetDeviceObject,
BootSector, StartingOffset, NumberOfBytesToRead );
// Reject a volume that contains fat artifacts
DebugTrace(DEBUG_TRACE_MOUNT, "OEM[%s]", BootSector->Oem);
if (BootSector->Oem[0])
{
try_return();
}
// Allocating memory for reading in Super Block...
SuperBlock = Ext2AllocatePool( PagedPool, NumberOfBytesToRead );
RtlZeroMemory( SuperBlock, NumberOfBytesToRead );
StartingOffset = 1024;
// Reading in the Super Block...
Ext2PerformVerifyDiskRead ( TargetDeviceObject,
SuperBlock, StartingOffset, NumberOfBytesToRead );
// Resetting the DO_VERIFY_VOLUME Flag
if( WeClearedVerifyRequiredBit )
{
PtrVPB->RealDevice->Flags |= DO_VERIFY_VOLUME;
}
// Verifying the Super Block..
if( SuperBlock->s_magic == EXT2_SUPER_MAGIC )
{
//
// Found a valid super block.
// No more tests for now.
// Assuming that this is an ext2 partition...
// Going ahead with mount.
//
DebugTrace(DEBUG_TRACE_MOUNT, "Valid Ext2 partition detected\nMounting %s...", SuperBlock->s_volume_name);
//
// 2. Creating a volume device object
//
if (!NT_SUCCESS( IoCreateDevice(
Ext2GlobalData.Ext2DriverObject, // (This) Driver object
Ext2QuadAlign( sizeof(Ext2VCB) ), // Device Extension
NULL, // Device Name - no name ;)
FILE_DEVICE_DISK_FILE_SYSTEM, // Disk File System
0, // DeviceCharacteristics
FALSE, // Not an exclusive device
(PDEVICE_OBJECT *)&PtrVolumeDeviceObject)) // The Volume Device Object
)
{
try_return();
}
//
// Our alignment requirement is the larger of the processor alignment requirement
// already in the volume device object and that in the TargetDeviceObject
//
if (TargetDeviceObject->AlignmentRequirement > PtrVolumeDeviceObject->AlignmentRequirement)
{
PtrVolumeDeviceObject->AlignmentRequirement = TargetDeviceObject->AlignmentRequirement;
}
//
// Clearing the Device Initialising Flag
//
Ext2ClearFlag( PtrVolumeDeviceObject->Flags, DO_DEVICE_INITIALIZING);
//
// Setting the Stack Size for the newly created Volume Device Object
//
PtrVolumeDeviceObject->StackSize = (CCHAR)(TargetDeviceObject->StackSize + 1);
//
// 3. Creating the link between Target Device Object
// and the Volume Device Object via the Volume Parameter Block
//
PtrVPB->DeviceObject = PtrVolumeDeviceObject;
// Remembring the Volume parameters in the VPB bock
for( i = 0; i < 16 ; i++ )
{
PtrVPB->VolumeLabel[i] = SuperBlock->s_volume_name[i];
if( SuperBlock->s_volume_name[i] == 0 )
break;
}
PtrVPB->VolumeLabelLength = i * 2;
PtrVPB->SerialNumber = ((ULONG*)SuperBlock->s_uuid)[0];
//
// 4. Initialise the Volume Comtrol Block
//
{
LARGE_INTEGER AllocationSize;
AllocationSize .QuadPart =
( EXT2_MIN_BLOCK_SIZE << SuperBlock->s_log_block_size ) *
SuperBlock->s_blocks_count;
Ext2InitializeVCB(
PtrVolumeDeviceObject,
TargetDeviceObject,
PtrVPB,
&AllocationSize);
PtrVCB = (PtrExt2VCB)(PtrVolumeDeviceObject->DeviceExtension);
ASSERT( PtrVCB );
}
PtrVCB->InodesCount = SuperBlock->s_inodes_count;
PtrVCB->BlocksCount = SuperBlock->s_blocks_count;
PtrVCB->ReservedBlocksCount = SuperBlock->s_r_blocks_count;
PtrVCB->FreeBlocksCount = SuperBlock->s_free_blocks_count;
PtrVCB->FreeInodesCount = SuperBlock->s_free_inodes_count;
PtrVCB->LogBlockSize = SuperBlock->s_log_block_size;
PtrVCB->InodesPerGroup = SuperBlock->s_inodes_per_group;
PtrVCB->BlocksPerGroup = SuperBlock->s_blocks_per_group;
PtrVCB->NoOfGroups = ( SuperBlock->s_blocks_count - SuperBlock->s_first_data_block
+ SuperBlock->s_blocks_per_group - 1 )
/ SuperBlock->s_blocks_per_group;
if( SuperBlock->s_rev_level )
{
PtrVCB->InodeSize = SuperBlock->s_inode_size;
}
else
{
PtrVCB->InodeSize = sizeof( EXT2_INODE );
}
PtrVCB->PtrGroupDescriptors = Ext2AllocatePool( NonPagedPool, sizeof( Ext2GroupDescriptors ) * PtrVCB->NoOfGroups );
RtlZeroMemory( PtrVCB->PtrGroupDescriptors , sizeof( Ext2GroupDescriptors ) * PtrVCB->NoOfGroups );
//
// Attempting to Read in some matadata from the Cache...
// using pin access...
//
LogicalBlockSize = EXT2_MIN_BLOCK_SIZE << PtrVCB->LogBlockSize;
//
// Reading Group Descriptors...
//
if( PtrVCB->LogBlockSize )
{
// First block contains the descriptors...
VolumeByteOffset.QuadPart = LogicalBlockSize;
}
else
{
// Second block contains the descriptors...
VolumeByteOffset.QuadPart = LogicalBlockSize * 2;
}
NumberOfBytesToRead = PtrVCB->NoOfGroups * sizeof( struct ext2_group_desc );
NumberOfBytesToRead = Ext2Align( NumberOfBytesToRead, LogicalBlockSize );
if (!CcMapData( PtrVCB->PtrStreamFileObject,
&VolumeByteOffset,
NumberOfBytesToRead,
TRUE,
&PtrBCB,
&PtrCacheBuffer ))
{
DebugTrace(DEBUG_TRACE_ERROR, "Cache read failiure while reading in volume meta data", 0);
try_return( Status = STATUS_INSUFFICIENT_RESOURCES );
}
else
{
//
// Saving up Often Used Group Descriptor Information in the VCB...
//
unsigned int DescIndex ;
DebugTrace(DEBUG_TRACE_MISC, "Cache hit while reading in volume meta data", 0);
PtrGroupDescriptor = (PEXT2_GROUP_DESCRIPTOR )PtrCacheBuffer;
for( DescIndex = 0; DescIndex < PtrVCB->NoOfGroups; DescIndex++ )
{
PtrVCB->PtrGroupDescriptors[ DescIndex ].InodeTablesBlock
= PtrGroupDescriptor[ DescIndex ].bg_inode_table;
PtrVCB->PtrGroupDescriptors[ DescIndex ].InodeBitmapBlock
= PtrGroupDescriptor[ DescIndex ].bg_inode_bitmap
;
PtrVCB->PtrGroupDescriptors[ DescIndex ].BlockBitmapBlock
= PtrGroupDescriptor[ DescIndex ].bg_block_bitmap
;
PtrVCB->PtrGroupDescriptors[ DescIndex ].FreeBlocksCount
= PtrGroupDescriptor[ DescIndex ].bg_free_blocks_count;
PtrVCB->PtrGroupDescriptors[ DescIndex ].FreeInodesCount
= PtrGroupDescriptor[ DescIndex ].bg_free_inodes_count;
}
CcUnpinData( PtrBCB );
PtrBCB = NULL;
}
//
// 5. Creating a Root Directory FCB
//
PtrRootFileObject = IoCreateStreamFileObject(NULL, TargetDeviceObject );
if( !PtrRootFileObject )
{
try_return();
}
//
// Associate the file stream with the Volume parameter block...
// I do it now
//
PtrRootFileObject->Vpb = PtrVCB->PtrVPB;
PtrRootFileObject->ReadAccess = TRUE;
PtrRootFileObject->WriteAccess = TRUE;
{
PtrExt2ObjectName PtrObjectName;
LARGE_INTEGER ZeroSize;
PtrObjectName = Ext2AllocateObjectName();
RtlInitUnicodeString( &PtrObjectName->ObjectName, L"\\" );
Ext2CopyWideCharToUnicodeString( &PtrObjectName->ObjectName, L"\\" );
ZeroSize.QuadPart = 0;
if ( !NT_SUCCESS( Ext2CreateNewFCB(
&PtrVCB->PtrRootDirectoryFCB, // Root FCB
ZeroSize, // AllocationSize,
ZeroSize, // EndOfFile,
PtrRootFileObject, // The Root Dircetory File Object
PtrVCB,
PtrObjectName ) ) )
{
try_return();
}
PtrVCB->PtrRootDirectoryFCB->FCBFlags |= EXT2_FCB_DIRECTORY | EXT2_FCB_ROOT_DIRECTORY;
}
PtrVCB->PtrRootDirectoryFCB->DcbFcb.Dcb.PtrDirFileObject = PtrRootFileObject;
PtrVCB->PtrRootDirectoryFCB->INodeNo = EXT2_ROOT_INO;
PtrRootFileObject->SectionObjectPointer = &(PtrVCB->PtrRootDirectoryFCB->NTRequiredFCB.SectionObject);
RtlInitUnicodeString( &PtrRootFileObject->FileName, L"\\" );
Ext2InitializeFCBInodeInfo( PtrVCB->PtrRootDirectoryFCB );
//
// Initiating caching for root directory...
//
CcInitializeCacheMap(PtrRootFileObject,
(PCC_FILE_SIZES)(&(PtrVCB->PtrRootDirectoryFCB->NTRequiredFCB.CommonFCBHeader.AllocationSize)),
TRUE, // We will utilize pin access for directories
&(Ext2GlobalData.CacheMgrCallBacks), // callbacks
PtrVCB->PtrRootDirectoryFCB ); // The context used in callbacks
//
// 6. Update the VCB Flags
//
PtrVCB->VCBFlags |= EXT2_VCB_FLAGS_VOLUME_MOUNTED ; // | EXT2_VCB_FLAGS_VOLUME_READ_ONLY;
//
// 7. Mount Success
//
Status = STATUS_SUCCESS;
{
//
// This block is for testing....
// To be removed...
/*
EXT2_INODE Inode ;
Ext2ReadInode( PtrVCB, 100, &Inode );
DebugTrace( DEBUG_TRACE_MISC, "Inode size= %lX [FS Ctrl]", Inode.i_size );
Ext2DeallocInode( NULL, PtrVCB, 0xfb6 );
*/
}
// ObDereferenceObject( TargetDeviceObject );
}
else
{
DebugTrace(DEBUG_TRACE_MOUNT, "Failing mount. Partition not Ext2...", 0);
}
try_exit: NOTHING;
}
finally
{
// Freeing Allocated Memory...
if( SuperBlock != NULL )
{
DebugTrace( DEBUG_TRACE_FREE, "Freeing = %lX [FS Ctrl]", SuperBlock );
ExFreePool( SuperBlock );
}
if( BootSector != NULL )
{
DebugTrace( DEBUG_TRACE_FREE, "Freeing = %lX [FS Ctrl]", BootSector);
ExFreePool( BootSector );
}
// start unwinding if we were unsuccessful
if (!NT_SUCCESS( Status ))
{
}
}
return Status;
}
static NTSTATUS
VfatMount (PVFAT_IRP_CONTEXT IrpContext)
/*
* FUNCTION: Mount the filesystem
*/
{
PDEVICE_OBJECT DeviceObject = NULL;
PDEVICE_EXTENSION DeviceExt = NULL;
BOOLEAN RecognizedFS;
NTSTATUS Status;
PVFATFCB Fcb = NULL;
PVFATFCB VolumeFcb = NULL;
PVFATCCB Ccb = NULL;
PDEVICE_OBJECT DeviceToMount;
PVPB Vpb;
UNICODE_STRING NameU = RTL_CONSTANT_STRING(L"\\$$Fat$$");
UNICODE_STRING VolumeNameU = RTL_CONSTANT_STRING(L"\\$$Volume$$");
ULONG HashTableSize;
ULONG eocMark;
FATINFO FatInfo;
DPRINT("VfatMount(IrpContext %p)\n", IrpContext);
ASSERT(IrpContext);
if (IrpContext->DeviceObject != VfatGlobalData->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
goto ByeBye;
}
DeviceToMount = IrpContext->Stack->Parameters.MountVolume.DeviceObject;
Vpb = IrpContext->Stack->Parameters.MountVolume.Vpb;
Status = VfatHasFileSystem (DeviceToMount, &RecognizedFS, &FatInfo);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
if (RecognizedFS == FALSE)
{
DPRINT("VFAT: Unrecognized Volume\n");
Status = STATUS_UNRECOGNIZED_VOLUME;
goto ByeBye;
}
/* Use prime numbers for the table size */
if (FatInfo.FatType == FAT12)
{
HashTableSize = 4099; // 4096 = 4 * 1024
}
else if (FatInfo.FatType == FAT16 ||
FatInfo.FatType == FATX16)
{
HashTableSize = 16411; // 16384 = 16 * 1024
}
else
{
HashTableSize = 65537; // 65536 = 64 * 1024;
}
HashTableSize = FCB_HASH_TABLE_SIZE;
DPRINT("VFAT: Recognized volume\n");
Status = IoCreateDevice(VfatGlobalData->DriverObject,
ROUND_UP(sizeof (DEVICE_EXTENSION), sizeof(ULONG)) + sizeof(HASHENTRY*) * HashTableSize,
NULL,
FILE_DEVICE_DISK_FILE_SYSTEM,
DeviceToMount->Characteristics,
FALSE,
&DeviceObject);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
DeviceObject->Flags = DeviceObject->Flags | DO_DIRECT_IO;
DeviceExt = (PVOID) DeviceObject->DeviceExtension;
RtlZeroMemory(DeviceExt, ROUND_UP(sizeof(DEVICE_EXTENSION), sizeof(ULONG)) + sizeof(HASHENTRY*) * HashTableSize);
DeviceExt->FcbHashTable = (HASHENTRY**)((ULONG_PTR)DeviceExt + ROUND_UP(sizeof(DEVICE_EXTENSION), sizeof(ULONG)));
DeviceExt->HashTableSize = HashTableSize;
/* use same vpb as device disk */
DeviceObject->Vpb = Vpb;
DeviceToMount->Vpb = Vpb;
Status = VfatMountDevice(DeviceExt, DeviceToMount);
if (!NT_SUCCESS(Status))
{
/* FIXME: delete device object */
goto ByeBye;
}
DPRINT("BytesPerSector: %d\n", DeviceExt->FatInfo.BytesPerSector);
DPRINT("SectorsPerCluster: %d\n", DeviceExt->FatInfo.SectorsPerCluster);
DPRINT("FATCount: %d\n", DeviceExt->FatInfo.FATCount);
DPRINT("FATSectors: %d\n", DeviceExt->FatInfo.FATSectors);
DPRINT("RootStart: %d\n", DeviceExt->FatInfo.rootStart);
DPRINT("DataStart: %d\n", DeviceExt->FatInfo.dataStart);
if (DeviceExt->FatInfo.FatType == FAT32)
{
DPRINT("RootCluster: %d\n", DeviceExt->FatInfo.RootCluster);
}
switch (DeviceExt->FatInfo.FatType)
{
case FAT12:
DeviceExt->GetNextCluster = FAT12GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT12FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT12WriteCluster;
DeviceExt->CleanShutBitMask = 0;
break;
case FAT16:
case FATX16:
DeviceExt->GetNextCluster = FAT16GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT16FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT16WriteCluster;
DeviceExt->CleanShutBitMask = 0x8000;
break;
case FAT32:
case FATX32:
DeviceExt->GetNextCluster = FAT32GetNextCluster;
DeviceExt->FindAndMarkAvailableCluster = FAT32FindAndMarkAvailableCluster;
DeviceExt->WriteCluster = FAT32WriteCluster;
DeviceExt->CleanShutBitMask = 0x80000000;
break;
}
if (DeviceExt->FatInfo.FatType == FATX16
|| DeviceExt->FatInfo.FatType == FATX32)
{
DeviceExt->Flags |= VCB_IS_FATX;
DeviceExt->GetNextDirEntry = FATXGetNextDirEntry;
DeviceExt->BaseDateYear = 2000;
}
else
{
DeviceExt->GetNextDirEntry = FATGetNextDirEntry;
DeviceExt->BaseDateYear = 1980;
}
DeviceExt->StorageDevice = DeviceToMount;
DeviceExt->StorageDevice->Vpb->DeviceObject = DeviceObject;
DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
DeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
DPRINT("FsDeviceObject %p\n", DeviceObject);
/* Initialize this resource early ... it's used in VfatCleanup */
ExInitializeResourceLite(&DeviceExt->DirResource);
DeviceExt->FATFileObject = IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
Fcb = vfatNewFCB(DeviceExt, &NameU);
if (Fcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
Ccb = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList);
if (Ccb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(Ccb, sizeof (VFATCCB));
DeviceExt->FATFileObject->FsContext = Fcb;
DeviceExt->FATFileObject->FsContext2 = Ccb;
DeviceExt->FATFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
DeviceExt->FATFileObject->PrivateCacheMap = NULL;
DeviceExt->FATFileObject->Vpb = DeviceObject->Vpb;
Fcb->FileObject = DeviceExt->FATFileObject;
Fcb->Flags |= FCB_IS_FAT;
Fcb->RFCB.FileSize.QuadPart = DeviceExt->FatInfo.FATSectors * DeviceExt->FatInfo.BytesPerSector;
Fcb->RFCB.ValidDataLength = Fcb->RFCB.FileSize;
Fcb->RFCB.AllocationSize = Fcb->RFCB.FileSize;
CcInitializeCacheMap(DeviceExt->FATFileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
TRUE,
&VfatGlobalData->CacheMgrCallbacks,
Fcb);
DeviceExt->LastAvailableCluster = 2;
ExInitializeResourceLite(&DeviceExt->FatResource);
InitializeListHead(&DeviceExt->FcbListHead);
VolumeFcb = vfatNewFCB(DeviceExt, &VolumeNameU);
if (VolumeFcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
VolumeFcb->Flags = FCB_IS_VOLUME;
VolumeFcb->RFCB.FileSize.QuadPart = DeviceExt->FatInfo.Sectors * DeviceExt->FatInfo.BytesPerSector;
VolumeFcb->RFCB.ValidDataLength = VolumeFcb->RFCB.FileSize;
VolumeFcb->RFCB.AllocationSize = VolumeFcb->RFCB.FileSize;
DeviceExt->VolumeFcb = VolumeFcb;
ExAcquireResourceExclusiveLite(&VfatGlobalData->VolumeListLock, TRUE);
InsertHeadList(&VfatGlobalData->VolumeListHead, &DeviceExt->VolumeListEntry);
ExReleaseResourceLite(&VfatGlobalData->VolumeListLock);
/* read serial number */
DeviceObject->Vpb->SerialNumber = DeviceExt->FatInfo.VolumeID;
/* read volume label */
ReadVolumeLabel(DeviceExt, DeviceObject->Vpb);
/* read clean shutdown bit status */
Status = GetNextCluster(DeviceExt, 1, &eocMark);
if (NT_SUCCESS(Status))
{
if (eocMark & DeviceExt->CleanShutBitMask)
{
/* unset clean shutdown bit */
eocMark &= ~DeviceExt->CleanShutBitMask;
WriteCluster(DeviceExt, 1, eocMark);
VolumeFcb->Flags |= VCB_CLEAR_DIRTY;
}
}
VolumeFcb->Flags |= VCB_IS_DIRTY;
FsRtlNotifyVolumeEvent(DeviceExt->FATFileObject, FSRTL_VOLUME_MOUNT);
Status = STATUS_SUCCESS;
ByeBye:
if (!NT_SUCCESS(Status))
{
// cleanup
if (DeviceExt && DeviceExt->FATFileObject)
ObDereferenceObject (DeviceExt->FATFileObject);
if (Fcb)
vfatDestroyFCB(Fcb);
if (Ccb)
vfatDestroyCCB(Ccb);
if (DeviceObject)
IoDeleteDevice(DeviceObject);
if (VolumeFcb)
vfatDestroyFCB(VolumeFcb);
}
return Status;
}
static
NTSTATUS
NtfsMountVolume(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
PDEVICE_OBJECT NewDeviceObject = NULL;
PDEVICE_OBJECT DeviceToMount;
PIO_STACK_LOCATION Stack;
PNTFS_FCB Fcb = NULL;
PNTFS_CCB Ccb = NULL;
PNTFS_VCB Vcb = NULL;
NTSTATUS Status;
DPRINT1("NtfsMountVolume() called\n");
if (DeviceObject != NtfsGlobalData->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
goto ByeBye;
}
Stack = IoGetCurrentIrpStackLocation(Irp);
DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
Status = NtfsHasFileSystem(DeviceToMount);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
Status = IoCreateDevice(NtfsGlobalData->DriverObject,
sizeof(DEVICE_EXTENSION),
NULL,
FILE_DEVICE_DISK_FILE_SYSTEM,
0,
FALSE,
&NewDeviceObject);
if (!NT_SUCCESS(Status))
goto ByeBye;
NewDeviceObject->Flags |= DO_DIRECT_IO;
Vcb = (PVOID)NewDeviceObject->DeviceExtension;
RtlZeroMemory(Vcb, sizeof(NTFS_VCB));
Vcb->Identifier.Type = NTFS_TYPE_VCB;
Vcb->Identifier.Size = sizeof(NTFS_TYPE_VCB);
Status = NtfsGetVolumeData(DeviceToMount,
Vcb);
if (!NT_SUCCESS(Status))
goto ByeBye;
NewDeviceObject->Vpb = DeviceToMount->Vpb;
Vcb->StorageDevice = DeviceToMount;
Vcb->StorageDevice->Vpb->DeviceObject = NewDeviceObject;
Vcb->StorageDevice->Vpb->RealDevice = Vcb->StorageDevice;
Vcb->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
NewDeviceObject->StackSize = Vcb->StorageDevice->StackSize + 1;
NewDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
Vcb->StreamFileObject = IoCreateStreamFileObject(NULL,
Vcb->StorageDevice);
InitializeListHead(&Vcb->FcbListHead);
Fcb = NtfsCreateFCB(NULL, Vcb);
if (Fcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
Ccb = ExAllocatePoolWithTag(NonPagedPool,
sizeof(NTFS_CCB),
TAG_CCB);
if (Ccb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(Ccb, sizeof(NTFS_CCB));
Ccb->Identifier.Type = NTFS_TYPE_CCB;
Ccb->Identifier.Size = sizeof(NTFS_TYPE_CCB);
Vcb->StreamFileObject->FsContext = Fcb;
Vcb->StreamFileObject->FsContext2 = Ccb;
Vcb->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
Vcb->StreamFileObject->PrivateCacheMap = NULL;
Vcb->StreamFileObject->Vpb = Vcb->Vpb;
Ccb->PtrFileObject = Vcb->StreamFileObject;
Fcb->FileObject = Vcb->StreamFileObject;
Fcb->Vcb = (PDEVICE_EXTENSION)Vcb->StorageDevice;
Fcb->Flags = FCB_IS_VOLUME_STREAM;
Fcb->RFCB.FileSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
Fcb->RFCB.ValidDataLength.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector;
Fcb->RFCB.AllocationSize.QuadPart = Vcb->NtfsInfo.SectorCount * Vcb->NtfsInfo.BytesPerSector; /* Correct? */
// Fcb->Entry.ExtentLocationL = 0;
// Fcb->Entry.DataLengthL = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
CcInitializeCacheMap(Vcb->StreamFileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
FALSE,
&(NtfsGlobalData->CacheMgrCallbacks),
Fcb);
ExInitializeResourceLite(&Vcb->DirResource);
KeInitializeSpinLock(&Vcb->FcbListLock);
/* Get serial number */
NewDeviceObject->Vpb->SerialNumber = Vcb->NtfsInfo.SerialNumber;
/* Get volume label */
NewDeviceObject->Vpb->VolumeLabelLength = Vcb->NtfsInfo.VolumeLabelLength;
RtlCopyMemory(NewDeviceObject->Vpb->VolumeLabel,
Vcb->NtfsInfo.VolumeLabel,
Vcb->NtfsInfo.VolumeLabelLength);
Status = STATUS_SUCCESS;
ByeBye:
if (!NT_SUCCESS(Status))
{
/* Cleanup */
if (Vcb && Vcb->StreamFileObject)
ObDereferenceObject(Vcb->StreamFileObject);
if (Fcb)
ExFreePool(Fcb);
if (Ccb)
ExFreePool(Ccb);
if (NewDeviceObject)
IoDeleteDevice(NewDeviceObject);
}
DPRINT("NtfsMountVolume() done (Status: %lx)\n", Status);
return Status;
}
NTSTATUS
FFSInitializeVcb(
IN PFFS_IRP_CONTEXT IrpContext,
IN PFFS_VCB Vcb,
IN PFFS_SUPER_BLOCK FFSSb,
IN PDEVICE_OBJECT TargetDevice,
IN PDEVICE_OBJECT VolumeDevice,
IN PVPB Vpb)
{
BOOLEAN VcbResourceInitialized = FALSE;
USHORT VolumeLabelLength;
ULONG IoctlSize;
BOOLEAN NotifySyncInitialized = FALSE;
LONGLONG DiskSize;
LONGLONG PartSize;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
UNICODE_STRING RootNode;
USHORT Buffer[2];
ULONG ChangeCount;
__try
{
if (!Vpb)
{
Status = STATUS_DEVICE_NOT_READY;
__leave;
}
Buffer[0] = L'\\';
Buffer[1] = 0;
RootNode.Buffer = Buffer;
RootNode.MaximumLength = RootNode.Length = 2;
Vcb->McbTree = FFSAllocateMcb(Vcb, &RootNode,
FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_NORMAL);
if (!Vcb->McbTree)
{
__leave;
}
#if FFS_READ_ONLY
SetFlag(Vcb->Flags, VCB_READ_ONLY);
#endif //READ_ONLY
if (IsFlagOn(Vpb->RealDevice->Characteristics, FILE_REMOVABLE_MEDIA))
{
SetFlag(Vcb->Flags, VCB_REMOVABLE_MEDIA);
}
if (IsFlagOn(Vpb->RealDevice->Characteristics, FILE_FLOPPY_DISKETTE))
{
SetFlag(Vcb->Flags, VCB_FLOPPY_DISK);
}
#if 0
if (IsFlagOn(FFSGlobal->Flags, FFS_SUPPORT_WRITING))
{
if (IsFlagOn(FFSGlobal->Flags, FFS_SUPPORT_WRITING))
{
ClearFlag(Vcb->Flags, VCB_READ_ONLY);
}
else
{
SetFlag(Vcb->Flags, VCB_READ_ONLY);
}
}
else
#endif
{
SetFlag(Vcb->Flags, VCB_READ_ONLY);
}
ExInitializeResourceLite(&Vcb->MainResource);
ExInitializeResourceLite(&Vcb->PagingIoResource);
ExInitializeResourceLite(&Vcb->McbResource);
VcbResourceInitialized = TRUE;
Vcb->McbTree->Inode = FFS_ROOT_INO;
Vcb->Vpb = Vpb;
Vcb->RealDevice = Vpb->RealDevice;
Vpb->DeviceObject = VolumeDevice;
{
UNICODE_STRING LabelName;
OEM_STRING OemName;
LabelName.MaximumLength = 16 * 2;
LabelName.Length = 0;
LabelName.Buffer = Vcb->Vpb->VolumeLabel;
RtlZeroMemory(LabelName.Buffer, LabelName.MaximumLength);
VolumeLabelLength = 16;
while((VolumeLabelLength > 0) &&
((FFSSb->fs_volname[VolumeLabelLength-1] == 0x00) ||
(FFSSb->fs_volname[VolumeLabelLength-1] == 0x20)))
{
VolumeLabelLength--;
}
OemName.Buffer = FFSSb->fs_volname;
OemName.MaximumLength = 16;
OemName.Length = VolumeLabelLength;
Status = FFSOEMToUnicode(&LabelName,
&OemName);
if (!NT_SUCCESS(Status))
{
__leave;
}
Vpb->VolumeLabelLength = LabelName.Length;
}
Vpb->SerialNumber = ((ULONG*)FFSSb->fs_id)[0] + ((ULONG*)FFSSb->fs_id)[1] +
((ULONG*)FFSSb->fs_id)[2];
Vcb->StreamObj = IoCreateStreamFileObject(NULL, Vcb->Vpb->RealDevice);
if (Vcb->StreamObj)
{
Vcb->StreamObj->SectionObjectPointer = &(Vcb->SectionObject);
Vcb->StreamObj->Vpb = Vcb->Vpb;
Vcb->StreamObj->ReadAccess = TRUE;
if (IsFlagOn(Vcb->Flags, VCB_READ_ONLY))
{
Vcb->StreamObj->WriteAccess = TRUE;
Vcb->StreamObj->DeleteAccess = TRUE;
}
else
{
Vcb->StreamObj->WriteAccess = TRUE;
Vcb->StreamObj->DeleteAccess = TRUE;
}
Vcb->StreamObj->FsContext = (PVOID) Vcb;
Vcb->StreamObj->FsContext2 = NULL;
Vcb->StreamObj->Vpb = Vcb->Vpb;
SetFlag(Vcb->StreamObj->Flags, FO_NO_INTERMEDIATE_BUFFERING);
}
else
{
__leave;
}
InitializeListHead(&Vcb->FcbList);
InitializeListHead(&Vcb->NotifyList);
FsRtlNotifyInitializeSync(&Vcb->NotifySync);
NotifySyncInitialized = TRUE;
Vcb->DeviceObject = VolumeDevice;
Vcb->TargetDeviceObject = TargetDevice;
Vcb->OpenFileHandleCount = 0;
Vcb->ReferenceCount = 0;
Vcb->ffs_super_block = FFSSb;
Vcb->Header.NodeTypeCode = (USHORT) FFSVCB;
Vcb->Header.NodeByteSize = sizeof(FFS_VCB);
Vcb->Header.IsFastIoPossible = FastIoIsNotPossible;
Vcb->Header.Resource = &(Vcb->MainResource);
Vcb->Header.PagingIoResource = &(Vcb->PagingIoResource);
Vcb->Vpb->SerialNumber = 'PS';
DiskSize =
Vcb->DiskGeometry.Cylinders.QuadPart *
Vcb->DiskGeometry.TracksPerCylinder *
Vcb->DiskGeometry.SectorsPerTrack *
Vcb->DiskGeometry.BytesPerSector;
IoctlSize = sizeof(PARTITION_INFORMATION);
Status = FFSDiskIoControl(
TargetDevice,
IOCTL_DISK_GET_PARTITION_INFO,
NULL,
0,
&Vcb->PartitionInformation,
&IoctlSize);
PartSize = Vcb->PartitionInformation.PartitionLength.QuadPart;
if (!NT_SUCCESS(Status))
{
Vcb->PartitionInformation.StartingOffset.QuadPart = 0;
Vcb->PartitionInformation.PartitionLength.QuadPart =
DiskSize;
PartSize = DiskSize;
Status = STATUS_SUCCESS;
}
IoctlSize = sizeof(ULONG);
Status = FFSDiskIoControl(
TargetDevice,
IOCTL_DISK_CHECK_VERIFY,
NULL,
0,
&ChangeCount,
&IoctlSize);
if (!NT_SUCCESS(Status))
{
__leave;
}
Vcb->ChangeCount = ChangeCount;
Vcb->Header.AllocationSize.QuadPart =
Vcb->Header.FileSize.QuadPart = PartSize;
Vcb->Header.ValidDataLength.QuadPart =
(LONGLONG)(0x7fffffffffffffff);
/*
Vcb->Header.AllocationSize.QuadPart = (LONGLONG)(ffs_super_block->s_blocks_count - ffs_super_block->s_free_blocks_count)
* (FFS_MIN_BLOCK << ffs_super_block->s_log_block_size);
Vcb->Header.FileSize.QuadPart = Vcb->Header.AllocationSize.QuadPart;
Vcb->Header.ValidDataLength.QuadPart = Vcb->Header.AllocationSize.QuadPart;
*/
{
CC_FILE_SIZES FileSizes;
FileSizes.AllocationSize.QuadPart =
FileSizes.FileSize.QuadPart =
Vcb->Header.AllocationSize.QuadPart;
FileSizes.ValidDataLength.QuadPart= (LONGLONG)(0x7fffffffffffffff);
CcInitializeCacheMap(Vcb->StreamObj,
&FileSizes,
TRUE,
&(FFSGlobal->CacheManagerNoOpCallbacks),
Vcb);
}
#if 0 // LoadGroup XXX
if (!FFSLoadGroup(Vcb))
{
Status = STATUS_UNSUCCESSFUL;
__leave;
}
#endif
FsRtlInitializeLargeMcb(&(Vcb->DirtyMcbs), PagedPool);
InitializeListHead(&(Vcb->McbList));
if (IsFlagOn(FFSGlobal->Flags, FFS_CHECKING_BITMAP))
{
FFSCheckBitmapConsistency(IrpContext, Vcb);
}
{
ULONG dwData[FFS_BLOCK_TYPES] = {NDADDR, 1, 1, 1};
ULONG dwMeta[FFS_BLOCK_TYPES] = {0, 0, 0, 0};
ULONG i;
if (FS_VERSION == 1)
{
for (i = 0; i < FFS_BLOCK_TYPES; i++)
{
dwData[i] = dwData[i] << ((BLOCK_BITS - 2) * i);
if (i > 0)
{
dwMeta[i] = 1 + (dwMeta[i - 1] << (BLOCK_BITS - 2));
}
Vcb->dwData[i] = dwData[i];
Vcb->dwMeta[i] = dwMeta[i];
}
}
else
{
for (i = 0; i < FFS_BLOCK_TYPES; i++)
{
dwData[i] = dwData[i] << ((BLOCK_BITS - 3) * i);
if (i > 0)
{
dwMeta[i] = 1 + (dwMeta[i - 1] << (BLOCK_BITS - 3));
}
Vcb->dwData[i] = dwData[i];
Vcb->dwMeta[i] = dwMeta[i];
}
}
}
SetFlag(Vcb->Flags, VCB_INITIALIZED);
}
__finally
{
if (!NT_SUCCESS(Status))
{
if (NotifySyncInitialized)
{
FsRtlNotifyUninitializeSync(&Vcb->NotifySync);
}
if (Vcb->ffs_super_block)
{
ExFreePool(Vcb->ffs_super_block);
Vcb->ffs_super_block = NULL;
}
if (VcbResourceInitialized)
{
ExDeleteResourceLite(&Vcb->MainResource);
ExDeleteResourceLite(&Vcb->PagingIoResource);
}
}
}
return Status;
}
VOID
FatOpenDirectoryFile (
IN PIRP_CONTEXT IrpContext,
IN PDCB Dcb
)
/*++
Routine Description:
This routine opens a new directory file if one is not already open.
Arguments:
Dcb - Pointer to the DCB for the directory
Return Value:
None.
--*/
{
PAGED_CODE();
DebugTrace(+1, Dbg, "FatOpenDirectoryFile\n", 0);
DebugTrace( 0, Dbg, "Dcb = %08lx\n", Dcb);
//
// If we don't have some hold on this Dcb (there are several ways), there is nothing
// to prevent child files from closing and tearing this branch of the tree down in the
// midst of our slapping this reference onto it.
//
// I really wish we had a proper Fcb synchronization model (like CDFS/UDFS/NTFS).
//
ASSERT( FatIsCurrentOperationSynchedForDcbTeardown( IrpContext, Dcb ));
//
// If we haven't yet set the correct AllocationSize, do so.
//
if (Dcb->Header.AllocationSize.QuadPart == FCB_LOOKUP_ALLOCATIONSIZE_HINT) {
FatLookupFileAllocationSize( IrpContext, Dcb );
Dcb->Header.FileSize.LowPart =
Dcb->Header.AllocationSize.LowPart;
}
//
// Setup the Bitmap buffer if it is not big enough already
//
FatCheckFreeDirentBitmap( IrpContext, Dcb );
//
// Check if we need to create a directory file.
//
// We first do a spot check and then synchronize and check again.
//
if (Dcb->Specific.Dcb.DirectoryFile == NULL) {
PFILE_OBJECT DirectoryFileObject = NULL;
FatAcquireDirectoryFileMutex( Dcb->Vcb );
try {
if (Dcb->Specific.Dcb.DirectoryFile == NULL) {
PDEVICE_OBJECT RealDevice;
//
// Create the special file object for the directory file, and set
// up its pointers back to the Dcb and the section object pointer.
// Note that setting the DirectoryFile pointer in the Dcb has
// to be the last thing done.
//
// Preallocate a close context since we have no Ccb for this object.
//
RealDevice = Dcb->Vcb->CurrentDevice;
DirectoryFileObject = IoCreateStreamFileObject( NULL, RealDevice );
FatPreallocateCloseContext();
FatSetFileObject( DirectoryFileObject,
DirectoryFile,
Dcb,
NULL );
//
// Remember this internal open.
//
InterlockedIncrement( &(Dcb->Vcb->InternalOpenCount) );
//
// If this is the root directory, it is also a residual open.
//
if (NodeType( Dcb ) == FAT_NTC_ROOT_DCB) {
InterlockedIncrement( &(Dcb->Vcb->ResidualOpenCount) );
}
DirectoryFileObject->SectionObjectPointer = &Dcb->NonPaged->SectionObjectPointers;
DirectoryFileObject->ReadAccess = TRUE;
DirectoryFileObject->WriteAccess = TRUE;
DirectoryFileObject->DeleteAccess = TRUE;
InterlockedIncrement( &Dcb->Specific.Dcb.DirectoryFileOpenCount );
Dcb->Specific.Dcb.DirectoryFile = DirectoryFileObject;
//
// Indicate we're happy with the fileobject now.
//
DirectoryFileObject = NULL;
}
} finally {
FatReleaseDirectoryFileMutex( Dcb->Vcb );
//
// Rip the object up if we couldn't get the close context.
//
if (DirectoryFileObject) {
ObDereferenceObject( DirectoryFileObject );
}
}
}
static NTSTATUS
CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
PIRP Irp)
{
PDEVICE_EXTENSION DeviceExt = NULL;
PDEVICE_OBJECT NewDeviceObject = NULL;
PDEVICE_OBJECT DeviceToMount;
PIO_STACK_LOCATION Stack;
PFCB Fcb = NULL;
PCCB Ccb = NULL;
PVPB Vpb;
NTSTATUS Status;
CDINFO CdInfo;
DPRINT("CdfsMountVolume() called\n");
if (DeviceObject != CdfsGlobalData->DeviceObject)
{
Status = STATUS_INVALID_DEVICE_REQUEST;
goto ByeBye;
}
Stack = IoGetCurrentIrpStackLocation(Irp);
DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
Vpb = Stack->Parameters.MountVolume.Vpb;
Status = CdfsGetVolumeData(DeviceToMount, &CdInfo);
if (!NT_SUCCESS(Status))
{
goto ByeBye;
}
Status = IoCreateDevice(CdfsGlobalData->DriverObject,
sizeof(DEVICE_EXTENSION),
NULL,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
DeviceToMount->Characteristics,
FALSE,
&NewDeviceObject);
if (!NT_SUCCESS(Status))
goto ByeBye;
NewDeviceObject->Flags = NewDeviceObject->Flags | DO_DIRECT_IO;
NewDeviceObject->Flags &= ~DO_VERIFY_VOLUME;
DeviceExt = (PVOID)NewDeviceObject->DeviceExtension;
RtlZeroMemory(DeviceExt,
sizeof(DEVICE_EXTENSION));
Vpb->SerialNumber = CdInfo.SerialNumber;
Vpb->VolumeLabelLength = CdInfo.VolumeLabelLength;
RtlCopyMemory(Vpb->VolumeLabel, CdInfo.VolumeLabel, CdInfo.VolumeLabelLength);
RtlCopyMemory(&DeviceExt->CdInfo, &CdInfo, sizeof(CDINFO));
NewDeviceObject->Vpb = DeviceToMount->Vpb;
DeviceExt->VolumeDevice = NewDeviceObject;
DeviceExt->StorageDevice = DeviceToMount;
DeviceExt->StorageDevice->Vpb->DeviceObject = NewDeviceObject;
DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
NewDeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
NewDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
/* Close (and cleanup) might be called from IoCreateStreamFileObject
* but we use this resource from CdfsCleanup, therefore it should be
* initialized no later than this. */
ExInitializeResourceLite(&DeviceExt->DirResource);
DeviceExt->StreamFileObject = IoCreateStreamFileObject(NULL,
DeviceExt->StorageDevice);
Fcb = CdfsCreateFCB(NULL);
if (Fcb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
Ccb = ExAllocatePoolWithTag(NonPagedPool,
sizeof(CCB),
TAG_CCB);
if (Ccb == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(Ccb,
sizeof(CCB));
DeviceExt->StreamFileObject->ReadAccess = TRUE;
DeviceExt->StreamFileObject->WriteAccess = FALSE;
DeviceExt->StreamFileObject->DeleteAccess = FALSE;
DeviceExt->StreamFileObject->FsContext = Fcb;
DeviceExt->StreamFileObject->FsContext2 = Ccb;
DeviceExt->StreamFileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
DeviceExt->StreamFileObject->PrivateCacheMap = NULL;
DeviceExt->StreamFileObject->Vpb = DeviceExt->Vpb;
Ccb->PtrFileObject = DeviceExt->StreamFileObject;
Fcb->FileObject = DeviceExt->StreamFileObject;
Fcb->DevExt = (PDEVICE_EXTENSION)DeviceExt->StorageDevice;
Fcb->Flags = FCB_IS_VOLUME_STREAM;
Fcb->RFCB.FileSize.QuadPart = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
Fcb->RFCB.ValidDataLength = Fcb->RFCB.AllocationSize = Fcb->RFCB.FileSize;
Fcb->Entry.ExtentLocationL = 0;
Fcb->Entry.DataLengthL = (DeviceExt->CdInfo.VolumeSpaceSize + DeviceExt->CdInfo.VolumeOffset) * BLOCKSIZE;
CcInitializeCacheMap(DeviceExt->StreamFileObject,
(PCC_FILE_SIZES)(&Fcb->RFCB.AllocationSize),
TRUE,
&(CdfsGlobalData->CacheMgrCallbacks),
Fcb);
ExInitializeResourceLite(&DeviceExt->VcbResource);
KeInitializeSpinLock(&DeviceExt->FcbListLock);
InitializeListHead(&DeviceExt->FcbListHead);
FsRtlNotifyInitializeSync(&DeviceExt->NotifySync);
InitializeListHead(&DeviceExt->NotifyList);
Status = STATUS_SUCCESS;
ByeBye:
if (!NT_SUCCESS(Status))
{
/* Cleanup */
if (DeviceExt && DeviceExt->StreamFileObject)
ObDereferenceObject(DeviceExt->StreamFileObject);
if (Fcb)
ExFreePool(Fcb);
if (NewDeviceObject)
IoDeleteDevice(NewDeviceObject);
}
DPRINT("CdfsMountVolume() done (Status: %lx)\n", Status);
return(Status);
}
